Awesomest news from blizzcon this year. Even more because it will add 2 new playable races!

Directly from their website:

Worgen - Alliance:
The worgen are a race of feral wolf-beasts whose very name inspires fear. Theories regarding their history abound, yet the worgen's origins remain steeped in mystery.Records indicate that the worgen existed for a time in Kalimdor. In fact, more recent evidence suggests that their true origin might have a connection to the night elves and a secretive druidic order from Kalimdor's distant past. Yet until new evidence comes to light, this information remains speculative.The worgen's first verified appearance in the Eastern Kingdoms has been traced back to the Third War, when the archmage Arugal utilized the wolf-beasts as a weapon against the Scourge. Arugal's weapons soon turned against him, however, as the curse of the worgen rapidly spread among the human population, transforming ordinary men and women into ravenous, feral creatures.Arugal adopted many of the worgen as his own and retreated to the former mansion of Baron Silverlaine, the estate now known as Shadowfang Keep. The curse, however, was not contained. It persisted in the lands of Silverpine and extended even into the fabled walled nation of Gilneas, where the curse rapidly reached pandemic levels.The citizens of Gilneas found themselves trapped, with no hope of escape. They retreated deeper within the isolated domain, and there they survived, fearful of the savage presence that lurked just outside the barricades.Tensions among the displaced citizens escalated over time, resulting in a civil war that now threatens to destabilize the embattled nation even more.There are those among the Gilneans, however, who cling to hope. Many believe that a treatment for the worgen curse may exist, although others have nearly given up, fearful that if the barricades should fall, their humanity will be lost forever.

Goblins - Horde:
Originally the slaves of jungle trolls on the Isle of Kezan, the goblin race was forced to mine kaja'mite ore out of the volcanic bowels of Mount Kajaro.The trolls used this potent mineral for their voodoo rituals, but it had an unexpected effect on the slaves who were in constant contact with it: kaja'mite generated a startling new cunning and intelligence in the goblins. Crafting their own powerful artifacts of engineering and alchemy in secret, the goblins soon overthrew their oppressors and claimed Kezan for their homeland. The mines that had been their prison, their slave camp, and the base of their rebellion now became the city of Undermine. Weaving through the heart of the island in a dizzying network of tunnels, vaults, and lava tubes, Undermine epitomizes the goblins' complex, unpredictable mindset.The goblins' natural greed soon lifted them to prominence as masters of mercantilism. Trade princes arose during the First War as the cleverest goblins learned to take advantage of the strife. Great fortunes were amassed, and the Isle of Kezan became a hub for fleets of goblin trading ships. One of the trade princes agreed to lend his faction’s services to the Horde in the Second War. Following the Horde's defeat, the goblins learned from their colleague's failed example, and soon they realized that their profits could double if they weren't stuck in such a restrictive relationship. By the end of the Third War, goblins were providing weaponry, vehicles, and devious services to both the Horde and the Alliance. This wouldn't last forever...Recently, the goblins of Kezan have found a new enemy in the Alliance – unexpected and unprofitable encounters with this faction have driven certain trade princes from their comfortable neutrality. Reforging old pacts with their one-time allies, the goblins have been welcomed into the Horde with open arms.

Other features are avaiable for you to read at the official website: Wow-europe.com
Deathwing has returned...
Oh, and also Warlord xD

The thing I like about Cataclysm is the class/race combinations. My personal favourite is the Blood Elf Warrior :D.. Also being able to use flying mounts in Azeroth would be awsome! I was wondering, does anyone know if you will be able to fight Deathwing in a raid/instance :P ?